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Sequence of Astronomical Objects in Visible Light

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Sequence of Astronomical Objects in Visible Light


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This figure shows an artist's rendition comparing brown dwarfs to stars and planets. All objects are plotted to the same scale. On the far left is the limb of the Sun. To its right is shown a very low mass star (a so-called "late-M dwarf"), a couple of brown dwarfs (a hotter "L dwarf" and a cooler "T dwarf"), and the planet Jupiter. These objects have masses ranging from 1050 times that of Jupiter (for the Sun) through 75, 65, 30, and 1 Jupiter mass for the late-M dwarf, L dwarf, T dwarf, and Jupiter, respectively. The colors of the brown dwarfs are chosen to match an age of 1 billion years. Despite the range in mass, all four of the low-mass objects are approximately the same size, ten times smaller than the diameter of the Sun. The visible-light sequence shows how these objects might appear to the human eye: the M and L dwarfs are red, while the T dwarf is dimly magenta, due to lack of light -- actually absorptions by sodium and potassium atoms -- in the green portion of the spectrum.


Mediatype image
Creator NASA/IPAC/R. Hurt
Date 0000
Insightuid nasaNAS~12~12~67483~172290
Source http://sscws1.ipac.caltech.edu/Imagegallery/image.php?image_name=visible_sequence
What Sun
What Jupiter
What Visible Light
Identifier SPITZ-visible_sequence
Addeddate 2009-10-06 03:54:35
Publicdate 2009-10-06 07:10:37

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